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https://issues.apache.org/jira/browse/HIVE-19700?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16491959#comment-16491959
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Hive QA commented on HIVE-19700:
--------------------------------
Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12925028/HIVE-19700.patch
{color:red}ERROR:{color} -1 due to no test(s) being added or modified.
{color:green}SUCCESS:{color} +1 due to 14390 tests passed
Test results:
https://builds.apache.org/job/PreCommit-HIVE-Build/11251/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/11251/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-11251/
Messages:
{noformat}
Executing org.apache.hive.ptest.execution.TestCheckPhase
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.YetusPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase
{noformat}
This message is automatically generated.
ATTACHMENT ID: 12925028 - PreCommit-HIVE-Build
> Workaround for JLine issue with UnsupportedTerminal
> ---------------------------------------------------
>
> Key: HIVE-19700
> URL: https://issues.apache.org/jira/browse/HIVE-19700
> Project: Hive
> Issue Type: Bug
> Reporter: Naveen Gangam
> Assignee: Naveen Gangam
> Priority: Major
> Fix For: 2.2.1
>
> Attachments: HIVE-19700.patch
>
>
> From the JLine's ConsoleReader, readLine(prompt, mask) calls the following
> beforeReadLine() method.
> {code}
> try {
> // System.out.println("is terminal supported " +
> terminal.isSupported());
> if (!terminal.isSupported()) {
> beforeReadLine(prompt, mask);
> }
> {code}
> So specifically when using UnsupportedTerminal {{-Djline.terminal}} and
> {{prompt=null}} and {{mask!=null}}, a "null" string gets printed to the
> console before and after the query result. {{UnsupportedTerminal}} is
> required to be used when running beeline as a background process, hangs
> otherwise.
> {code}
> private void beforeReadLine(final String prompt, final Character mask) {
> if (mask != null && maskThread == null) {
> final String fullPrompt = "\r" + prompt
> + " "
> + " "
> + " "
> + "\r" + prompt;
> maskThread = new Thread()
> {
> public void run() {
> while (!interrupted()) {
> try {
> Writer out = getOutput();
> out.write(fullPrompt);
> {code}
> So the {{prompt}} is null and {{mask}} is NOT in atleast 2 scenarios in
> beeline.
> when beeline's silent=true, prompt is null
> *
> https://github.com/apache/hive/blob/master/beeline/src/java/org/apache/hive/beeline/BeeLine.java#L1264
> when running multiline queries
> *
> https://github.com/apache/hive/blob/master/beeline/src/java/org/apache/hive/beeline/Commands.java#L1093
> When executing beeline in script mode (commands in a file), there should not
> be any masking while reading lines from the script file. aka, entire line
> should be a beeline command or part of a multiline hive query.
> So it should be safe to use a null mask instead of
> {{ConsoleReader.NULL_MASK}} when using UnsupportedTerminal as jline terminal.
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